Heim is not in the Athletics' starting lineup against the Marlins on Friday.
With right-hander Tyler Phillips on the mound for the Marlins on Friday, the Athletics will respond by deploying the lefty-hitting Carlos Cortes as the designated hitter. Heim has gone 7-for-27 (.259) with two home runs, six RBI and five runs scored over his last seven games, reaching base safely in six of those contests.